Plagigeyeria plagiostoma (A. J. Wagner, 1914 )

Grego, Jozef, 2020, Revision of the stygobiont gastropod genera Plagigeyeria Tomlin, 1930 and Travunijana Grego & Glöer, 2019 (Mollusca; Gastropoda; Moitessieriidae and Hydrobiidae) in Hercegovina and adjacent regions, European Journal of Taxonomy 691, pp. 1-56 : 10-12

Plagigeyeria plagiostoma (A. J. Wagner, 1914)

Figs 5A , 6C

Geyeria plagiostoma A. J. Wagner, 1914: 123 (1): 46–47.

Plagigeyeria plagiostoma – Tomlin, 1930: 24. Geyeria plagiostoma – A. J. Wagner 1928: 285, pl. 13. figs 70, 71, 73. Plagiogeyeria (sic) plagiostoma – Kuščer 1933: 62. Plagigeyeria plagiostoma – Jaeckel, Klemm & Meise 1957: 174. — Jaeckel 1967: 92. — Schütt 1972:

114, 119, pl. 6. fig. 1. — Willmann & Pieper 1978: 126. — Radoman 1983: 107, 224, pl. VII. fig. 21

(p. 225). — Bole & Velkovrh 1986: 202. — Bodon, Manganelli & Giusti 1996: 33, fig. 13. — Bank

2013: Fauna Europaea v. 2.6. — Bank & Neubert 2017: 25.

Diagnosis

Rather small shell (1.9 mm high) with faintly axially ribbed teleoconch, cancellate nepionic whorl and spirally ribbed protoconch with smoothly malleated nucleus, with open umbilicus, oval elongate, slightly expanded aperture.

Distribution

The species is known only from the spring of Bosna River (Vrelo Bosne) (581 m a.s.l.) near Ilidža, south of Sarajevo. This spring is draining the karst waters of the Igman Massif (1502 m a.s.l) and North Bjelašnica Massif (2067 m a.s.l.).

Remarks

The type species of the genus, Plagigeyeria plagiostoma , with P. inflata , were both originally described from the Bosna River Springs in Ilidža under the genus “ Geyeria ”, named after the famous German malacologist David Geyer (6 November 1855 – 6 November 1932). However the genus name was invalid due to homonymy, as it had been previously used by Buchecker in 1876 to name a moth in the family Castniidae Boisduval, 1828 , by Buckman in 1899 for a cephalopod, by Carapezzae & Schopen in 1899 for a brachiopod, and by Fucini, 1901 for a cephalopod. Based on the homonymy, Tomlin in 1930 renamed the genus “ Geyeria ” as Plagigeyeria with Plagigeyeria plagiostoma as type species and the Vrelo Bosna (581 m a.s.l.) as type locality for the genus. The species inhabits karst conduits under the Igman Massif (1502 m a.s.l.) and northern Bjelašnica Mountains (2067 m a.s.l.), likely drained from Prečko Polje (1002 m a.s.l.).

Figures

Fig. 5 (next page). A. Plagigeyeria plagiostoma (A. J. Wagner, 1914), from Vrelo Bosne in Ilidža, (topotype JG F1116). B. Travunijana vruljakensis Grego & Glöer, 2019, Gorica near Trebinje, spring Studenac (holotype HNHM-MOLL-104416). C. P. inflata (A. J. Wagner, 1928), from Vrelo Bosne in Ilidža (topotype JG F1117). D. P. ljutaensis sp. nov., Konjic district, spring of River Ljuta (holotype HNHM-MOLL-104180). E. P. konjicensis sp. nov., small spring at left bank of Ljuta River, 600 m downstream of the main spring (holotype HNHM-MOLL-104174); F–G. P. olsavskyi sp. nov., Studenci, spring Kajtazovina F. Holotype (HNHM-MOLL-104178). G. Paratype (JG F1192). H–I. P. olsavskyi sp. nov., Ljubuški district, Donji Proložac, spring Mali Prokop (JG F1209).

Fig. 6. A. Plagigeyeria ljutaensissp. nov., Konjic,Vrelo Ljuta, paratype (SBMNH 626401).B. P.konjicensis sp. nov., Konjic, left side spring of Ljuta River, paratype (SBMNH 626249). C. P. plagiostoma (A. J. Wagner, 1914), Sarajevo, Ilidža, Vrelo Bosne, (SBMNH 632718). D. P. inflata (A. J. Wagner, 1928), Sarajevo, Ilidža, Vrelo Bosne (SBMNH 33032). Scale bars = 1 mm (SEM SBMNH Vanessa Delnavaz).